<template>
  <div class="app-container">
    <el-form
      :model="queryParams"
      ref="queryForm"
      size="small"
      :inline="true"
      v-show="showSearch"
      label-width="68px"
    >
      <el-form-item label="课程名称" prop="courseName">
        <el-input
          v-model="queryParams.courseName"
          placeholder="请输入课程名称"
          clearable
          @keyup.enter.native="handleQuery"
        />
      </el-form-item>
      <el-form-item label="课程分类" prop="categoryName">
        <el-input
          v-model="queryParams.categoryName"
          placeholder="请输入课程分类"
          clearable
          @keyup.enter.native="handleQuery"
        />
      </el-form-item>
      <el-form-item label="课程描述" prop="courseDesc">
        <el-input
          v-model="queryParams.courseDesc"
          placeholder="请输入课程描述"
          clearable
          @keyup.enter.native="handleQuery"
        />
      </el-form-item>
      <el-form-item label="校区名称" prop="campusName">
        <el-input
          v-model="queryParams.campusName"
          placeholder="请输入校区名称"
          clearable
          @keyup.enter.native="handleQuery"
        />
      </el-form-item>
      <el-form-item label="状态" prop="courseStatus">
        <el-select
          v-model="queryParams.courseStatus"
          placeholder="请选择状态"
          clearable
          @keyup.enter.native="handleQuery"
        >
          <el-option label="正常" :value="1"></el-option>
          <el-option label="删除" :value="0"></el-option>
        </el-select>
      </el-form-item>
      <el-form-item>
        <el-button
          type="primary"
          icon="el-icon-search"
          size="mini"
          @click="handleQuery"
          >搜索</el-button
        >
        <el-button icon="el-icon-refresh" size="mini" @click="resetQuery"
          >重置</el-button
        >
      </el-form-item>
    </el-form>

    <el-row :gutter="10" class="mb8">
      <el-col :span="1.5">
        <el-button
          type="primary"
          plain
          icon="el-icon-plus"
          size="mini"
          @click="handleAdd"
          v-hasPermi="['courseManagement:course:add']"
          >新增</el-button
        >
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="success"
          plain
          icon="el-icon-edit"
          size="mini"
          :disabled="single"
          @click="handleUpdate"
          v-hasPermi="['courseManagement:course:edit']"
          >修改</el-button
        >
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="danger"
          plain
          icon="el-icon-delete"
          size="mini"
          :disabled="multiple"
          @click="handleDelete"
          v-hasPermi="['courseManagement:course:remove']"
          >删除</el-button
        >
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="warning"
          plain
          icon="el-icon-download"
          size="mini"
          @click="handleExport"
          v-hasPermi="['courseManagement:course:export']"
          >导出</el-button
        >
      </el-col>
      <right-toolbar
        :showSearch.sync="showSearch"
        @queryTable="getList"
      ></right-toolbar>
    </el-row>

    <el-table
      v-loading="loading"
      :data="courseList"
      @selection-change="handleSelectionChange"
    >
      <el-table-column type="selection" width="55" align="center" />
      <el-table-column label="课程id" align="center" prop="courseId" />
      <el-table-column label="课程名称" align="center" prop="courseName" />
      <el-table-column label="课程分类" align="center" prop="categoryName" />
      <el-table-column label="课程描述" align="center" prop="courseDesc" />
      <el-table-column
        label="封面图片"
        align="center"
        prop="coverImage"
        width="100"
      >
        <template slot-scope="scope">
          <image-preview :src="scope.row.coverImage" :width="50" :height="50" />
        </template>
      </el-table-column>
      <!-- <el-table-column label="视频路径" align="center" prop="videoPath" /> -->
      <el-table-column label="校区" align="center" prop="campusName" />
      <el-table-column label="状态" align="center" prop="courseStatus">
        <template slot-scope="scope">
          <el-tag type="success" v-if="scope.row.courseStatus == 1"
            >正常</el-tag
          >
          <el-tag type="danger" v-else>删除</el-tag>
        </template>
      </el-table-column>
      <el-table-column
        label="操作"
        align="center"
        class-name="small-padding fixed-width"
      >
        <template slot-scope="scope">
          <el-button
            size="mini"
            type="text"
            icon="el-icon-edit"
            @click="handleList(scope.row)"
            v-hasPermi="['courseManagement:course:edit']"
            >章节详情</el-button
          >
          <el-button
            size="mini"
            type="text"
            icon="el-icon-edit"
            @click="handleUpdate(scope.row)"
            v-hasPermi="['courseManagement:course:edit']"
            >修改</el-button
          >
          <el-button
            size="mini"
            type="text"
            icon="el-icon-delete"
            @click="handleDelete(scope.row)"
            v-hasPermi="['courseManagement:course:remove']"
            >删除</el-button
          >
        </template>
      </el-table-column>
    </el-table>

    <pagination
      v-show="total > 0"
      :total="total"
      :page.sync="queryParams.pageNum"
      :limit.sync="queryParams.pageSize"
      @pagination="getList"
    />

    <!-- 添加或修改课程列表对话框 -->
    <el-dialog :title="title" :visible.sync="open" width="500px" append-to-body>
      <el-form ref="form" :model="form" :rules="rules" label-width="80px">
        <el-form-item label="校区" prop="campusName">
          <el-select
            v-model="form.campusId"
            clearable
            placeholder="请选择校区"
            @change="getCategoryByCampusId(form.campusId)"
          >
            <el-option
              v-for="item in campusList"
              :key="item.campusId"
              :label="item.campusName"
              :value="item.campusId"
            >
            </el-option>
          </el-select>
        </el-form-item>
        <el-form-item label="课程分类" prop="categoryName">
          <el-select
            v-model="form.categoryId"
            clearable
            placeholder="请选择课程分类"
          >
            <el-option
              v-for="item in categoryListByCampus"
              :key="item.categoryId"
              :label="item.categoryName"
              :value="item.categoryId"
            >
            </el-option>
          </el-select>
        </el-form-item>
        <el-form-item label="课程名称" prop="courseName">
          <el-input v-model="form.courseName" placeholder="请输入课程名称" />
        </el-form-item>
        <el-form-item label="课程描述" prop="courseDesc">
          <el-input v-model="form.courseDesc" placeholder="请输入课程描述" />
        </el-form-item>
        <el-form-item label="封面图片" prop="coverImage">
          <!-- <image-upload v-model="form.coverImage" /> -->
          <el-upload
            action="#"
            :file-list="fileList"
            list-type="picture-card"
            :http-request="uploadImg"
            :on-remove="handleRemove"
          >
            <i slot="default" class="el-icon-plus"></i>
            <div slot="file" slot-scope="{ file }">
              <img
                class="el-upload-list__item-thumbnail"
                :src="file.url"
                alt=""
              />
              <span class="el-upload-list__item-actions">
                <span
                  class="el-upload-list__item-preview"
                  @click="handlePictureCardPreview(file)"
                >
                  <i class="el-icon-zoom-in"></i>
                </span>
                <span
                  v-if="!disabled"
                  class="el-upload-list__item-delete"
                  @click="handleRemove(file)"
                >
                  <i class="el-icon-delete"></i>
                </span>
              </span>
            </div>
          </el-upload>
          <el-dialog :visible.sync="dialogVisible">
            <img width="100%" :src="dialogImageUrl" alt="" />
          </el-dialog>
        </el-form-item>
        <!-- <el-form-item label="视频路径" prop="videoPath">
          <el-input v-model="form.videoPath" placeholder="请输入视频路径" />
        </el-form-item> -->
        <el-form-item label="状态" prop="courseStatus">
          <el-radio-group v-model="form.courseStatus">
            <el-radio :label="0">删除</el-radio>
            <el-radio :label="1">正常</el-radio>
          </el-radio-group>
        </el-form-item>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button type="primary" @click="submitForm">确 定</el-button>
        <el-button @click="cancel">取 消</el-button>
      </div>
    </el-dialog>
  </div>
</template>

<script>
import {
  listCourse,
  getCourse,
  delCourse,
  addCourse,
  updateCourse,
} from "@/api/courseManagement/course";
import Cookies from "js-cookie";
import { listCategoryByCampusId } from "@/api/courseManagement/category";
import { listCampusInfo } from "@/api/campus/campusInfo";
import { uploadIdCard } from "@/api/artGood/artGood";

export default {
  name: "Course",
  data() {
    return {
      // 遮罩层
      loading: true,
      // 选中数组
      ids: [],
      // 非单个禁用
      single: true,
      // 非多个禁用
      multiple: true,
      // 显示搜索条件
      showSearch: true,
      // 总条数
      total: 0,
      // 课程列表表格数据
      courseList: [],
      // 弹出层标题
      title: "",
      // 是否显示弹出层
      open: false,
      // 查询参数
      queryParams: {
        pageNum: 1,
        pageSize: 10,
        courseName: null,
        categoryName: null,
        courseDesc: null,
        campusName: null,
        campusId:null,
        courseStatus: null,
      },
      // 表单参数
      form: {
        courseStatus : 1,
      },
      // 表单校验
      rules: {},
      // 校区列表
      campusList: [],
      // 校区课程分类列表
      categoryListByCampus: [],
      // 上传的文件列表
      fileList: [],
      // 文件信息
      fileInfo: {},
      dialogImageUrl: "",
      dialogVisible: false,
      disabled: false,
    };
  },
  created() {
    const user= JSON.parse(Cookies.get("user"))
    this.queryParams.campusId = user.campusId
    this.getList();
  },
  methods: {
    /** 查询课程列表列表 */
    getList() {
      this.loading = true;
      listCourse(this.queryParams).then((response) => {
        this.courseList = response.rows;
        this.total = response.total;
        this.loading = false;
      });
    },
    getCategoryByCampusId(campusId) {
      this.form.categoryId = undefined; // 清空已选的分类
      this.categoryListByCampus = [];
      if (campusId) {
        listCategoryByCampusId(campusId).then((res) => {
          this.categoryListByCampus = res.rows;
        });
      }
    },
    getCategoryByCampusIdUp(campusId) {
      this.categoryListByCampus = [];
      if (campusId) {
        listCategoryByCampusId(campusId).then((res) => {
          this.categoryListByCampus = res.rows;
        });
      }
    },
    // 获取校区列表
    getCampusList() {
      listCampusInfo(this.queryParams).then((res) => {
        this.campusList = res.rows;
      });
    },
    // 取消按钮
    cancel() {
      this.open = false;
      this.reset();
      this.fileList = [];
    },
    // 表单重置
    reset() {
      this.form = {
        courseId: null,
        courseName: null,
        categoryId: null,
        courseDesc: null,
        coverImage: null,
        videoPath: null,
        campusId: null,
        courseStatus: 1,
        createTime: null,
        updateTime: null,
        demo1: null,
        demo2: null,
        demo3: null,
      };
      this.resetForm("form");
    },
    /** 搜索按钮操作 */
    handleQuery() {
      this.queryParams.pageNum = 1;
      this.getList();
    },
    /** 重置按钮操作 */
    resetQuery() {
      this.resetForm("queryForm");
      this.handleQuery();
    },
    // 多选框选中数据
    handleSelectionChange(selection) {
      this.ids = selection.map((item) => item.courseId);
      this.single = selection.length !== 1;
      this.multiple = !selection.length;
    },
    /** 新增按钮操作 */
    handleAdd() {
      this.reset();
      this.getCampusList();
      this.open = true;
      this.title = "添加课程列表";
    },
    
    /** 课程下的章节详情 */
    handleList(row){
      //跳转到章节页面，并且将参数课程名称courseName传递过去
      this.$router.push({
        path: '/courseManagement/chapter',
        query: {
          courseId: row.courseId,
          courseName: row.courseName
        }
      });
    },
    /** 修改按钮操作 */
    handleUpdate(row) {
      this.reset();
      this.getCampusList();
      const courseId = row.courseId || this.ids;
      getCourse(courseId).then((response) => {
        this.form = response.data;
        this.fileList = [{ name: "封面图片", url: this.form.coverImage }];
        this.getCategoryByCampusIdUp(this.form.campusId);
        this.open = true;
        this.title = "修改课程列表";
      });
    },
    /** 提交按钮 */
    submitForm() {
      this.$refs["form"].validate((valid) => {
        if (valid) {
          if (this.form.courseId != null) {
            updateCourse(this.form).then((response) => {
              this.$modal.msgSuccess("修改成功");
              this.open = false;
              this.getList();
            });
          } else {
            addCourse(this.form).then((response) => {
              this.$modal.msgSuccess("新增成功");
              this.open = false;
              this.getList();
            });
          }
        }
      });
      this.fileList = [];
    },
    /** 删除按钮操作 */
    handleDelete(row) {
      const courseIds = row.courseId || this.ids;
      this.$modal
        .confirm('是否确认删除课程列表编号为"' + courseIds + '"的数据项？')
        .then(function () {
          return delCourse(courseIds);
        })
        .then(() => {
          this.getList();
          this.$modal.msgSuccess("删除成功");
        })
        .catch(() => {});
    },
    /** 导出按钮操作 */
    handleExport() {
      this.download(
        "courseManagement/course/export",
        {
          ...this.queryParams,
        },
        `course_${new Date().getTime()}.xlsx`
      );
    },

    // 上传文件
    uploadImg(item) {
      // 上传文件需要formdata类型
      const formdata = new FormData();
      formdata.append("file", item.file);
      uploadIdCard(formdata).then((res) => {
        this.$modal.msgSuccess("上传成功");
        this.form.coverImage = res.data.file.url;
        this.fileList = [
          {
            name: item.file.name,
            url: res.data.file.url,
          },
        ];
      });
    },
    handlePictureCardPreview(file) {
      this.dialogImageUrl = file.url;
      this.dialogVisible = true;
    },
    handleRemove(file) {
      this.fileList = [];
      // 清空表单中的图片URL
      this.form.coverImage = null;
    },
  },
};
</script>
<style>
.el-form-item__label{
  font-size:13px
}
</style>
